Bottomley: Owning your Windows 8 UEFI Platform

I really don't think that this qualifies as "jailbreaking", using the standard tools to edit the system keys in the normal way, as you aren't breaking any security restrictions by doing this, you're supposed to be able to edit the keys. There is a similarity to jailbreaking guides, they both involve performing a sequence of technical steps around the early boot environment, but that's where the similarity ends.

I tried looking around for other jailbreak info for iOS but wasn't able to find much useful technical info as to what exactly the boot process is, what is broken in it to allow for an untethered jailbreak and how that is persisted across reboots. Anything that requires a USB connection or for the device to be tethered to boot isn't very interesting and isn't really the kind of threat that Secure Boot is meant to address. Secure Boot is meant to prevent remote attackers from modifying the early boot process in an undetectable way.

http://mjg59.dreamwidth.org/13061.html

A detailed comparison of different platforms such as iOS, Android, PS3, Xbox, uEFI Secure Boot would be interesting. Most of the boot locking systems have different design goals and threat models than Secure Boot so the techniques used by each may be different with different strengths and weaknesses.